export type CommentIdentityRow = Record<string, unknown>;
type PositionBounds = {
    left?: number;
    right?: number;
    top?: number;
    bottom?: number;
};
export type CommentPositionEntry = {
    key?: unknown;
    threadId?: unknown;
    kind?: string;
    storyKey?: string;
    pageIndex?: number | null;
    start?: number;
    end?: number;
    bounds?: PositionBounds | null;
} | null;
export type CommentPositions = Record<string, CommentPositionEntry | undefined>;
type PositionMatch = {
    key: string;
    entry: CommentPositionEntry;
} | {
    key: null;
    entry: null;
};
type CommentIdentitySources = {
    getComments: () => CommentIdentityRow[];
    getReviewDirectory: () => CommentIdentityRow[];
    getPositions: () => CommentPositions | null | undefined;
};
type CommentReference = CommentIdentityRow | string | number | null | undefined;
export declare const trackedChangeThreadParentIdForComment: (comment: CommentIdentityRow | null | undefined) => unknown;
export declare const createCommentIdentity: ({ getComments, getReviewDirectory, getPositions }: CommentIdentitySources) => {
    getComment: (id: unknown) => CommentIdentityRow | null;
    getThreadParent: (comment: CommentIdentityRow | null | undefined) => CommentIdentityRow | null | undefined;
    getCommentPositionKey: (commentOrId: CommentIdentityRow | string | null | undefined) => unknown;
    getCommentAliasIds: (commentOrId: CommentReference) => string[];
    resolveCommentPositionEntry: (commentOrId: CommentReference, preferredId?: unknown) => PositionMatch;
};
export {};